
"Longitude" is the dramatic human story of an epic scientific quest. The "longitude problem" was the thorniest dilemma of the eighteenth century. Lacking the ability to measure longitude, sailors throughout the great ages of exploration had been literally lost at sea. At the heart of Dava Sobel's fascinating brief history of astronomy, navigation and horology stands the figure of John Harrison, self-taught Yorkshire clockmaker, and his forty-year obsession with building the perfect timekeeper. Battling against the establishment, Harrison stood alone in pursuit of his solution and the £20,000 reward offered by Parliament.
Author

Dava Sobel is an accomplished writer of popular expositions of scientific topics. A 1964 graduate of the Bronx High School of Science, Ms. Sobel attended Antioch College and the City College of New York before receiving her bachelor of arts degree from the State University of New York at Binghamton in 1969. She holds honorary doctor of letters degrees from the University of Bath, in England, and Middlebury College, Vermont, both awarded in 2002. In her four decades as a science journalist she has written for many magazines, including Audubon, Discover, Life and The New Yorker, served as a contributing editor to Harvard Magazine and Omni, and co-authored five books, including Is Anyone Out There? with astronomer Frank Drake. Her most well known work is Longitude. The asteroid 30935 Davasobel is named for her.